| Issue |
EPJ Web Conf.
Volume 362, 2026
31st International Laser Radar Conference (ILRC 31) Held Together with the 22nd Coherent Laser Radar Conference (CLRC 22)
|
|
|---|---|---|
| Article Number | 01023 | |
| Number of page(s) | 3 | |
| Section | Joint CLRC/ILRC Session: New Lidar Technologies and Methods | |
| DOI | https://doi.org/10.1051/epjconf/202636201023 | |
| Published online | 09 April 2026 | |
https://doi.org/10.1051/epjconf/202636201023
Free-running dual optical comb high-precision ranging technology
Department of Applied Physics, Donghua University, No. 2999 North Renmin Road, Shanghai, 201620, P.R. China
Published online: 9 April 2026
Abstract
Dual comb absolute ranging technology is characterized by high-precision, and fast absolute distance measurement. However, the complicated system structure limited its use. In this paper, a free-running dual comb high-precision ranging system is proposed. The ranging precision is improved through software algorithms processing, such as adaptive filtering and cross-ambiguity function. Therefore, the system is simplified a lot. The experiments show that the range precision of 4.8 μm can be achieved when the target distance is about 1 m, laser repetition is about 180 MHz, frequency difference between two combs is about 587 Hz. The work in this paper is meaningful to the field application of the free running dual comb ranging system.
© The Authors, published by EDP Sciences, 2026
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